N level

Week

N mean removal (mg/L)

N removed at the end of 5th week (mg/L)

% removal at the end of 5th week

Total nitrogen (mg/g) in tissues

5 (mg/L)

1

8.13e

1.61a

68

16.90a

15 (mg/L)

2

1.29c

2.41b

84

17.90a

25 (mg/L)

3

0.27a

3.32c

87

20.63b

4

0.71b

5

2.15d